Patent US3055989A successfully refreshed from Google Patents.
US3055989A
Expired / Lapsed
US
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Ceramic reproducer
Assignee: CBS Broadcasting Inc
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Filing: 1957-08-12
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Granted: 1962-09-25
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Expires: 1977-08-12
Abstract
No abstract record available.
Inventors
- 👤 William S Bachman
- 👤 Louis R Porrata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:51
CPC Classifications
H; H04; H04R; H04R17/00; H04R17/04; H04R17/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1980888A
Cited
US1821836A
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US2093540A
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US2114471A
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US2207539A
Cited
US2856465A
Cited
US2849239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |